<!DOCTYPE html> <html lang="ja-JP"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width,user-scalable=yes,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.5"> <title></title> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script> <script> window.addEventListener("load",function(){ document.querySelector("input").value = "入力してください"; document.querySelector("input").style.color = "#CCCCCC"; document.querySelector("input").addEventListener("focus",function(){ document.querySelector("input").value = ""; document.querySelector("input").style.color = "#000000"; }); document.querySelector("input").addEventListener("blur",function(){ if(document.querySelector("input").value == ""){ document.querySelector("input").value = "入力してください"; document.querySelector("input").style.color = "#CCCCCC"; document.querySelector("input").addEventListener("focus",function(){ document.querySelector("input").value = ""; document.querySelector("input").style.color = "#000000"; }); } }); }); </script> <body> お名前:<input type="text" vlaue=""> </body> </html>
<!DOCTYPE html> <html lang="ja-JP"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width,user-scalable=yes,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.5"> <title></title> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script> <script> $(function(){ $("input") .val("入力してください") .css("color","#CCCCCC") .one("focus",function(){ $(this).val("").css("color","#000000"); }) .blur(function(){ if($(this).val() == ""){ $(this) .val("入力してください") .css("color","#CCCCCC") .one("focus",function(){ $(this).val("") .css("color","#000000"); }); } }); }); </script> <body> お名前:<input type="text" vlaue=""> </body> </html>